Katie Cloud Home Soy Candles are hand poured, made of all-natural soy wax, clean phthalate free oils, and cotton wicks to insure a clean even burn. 64oz candle burn time is approximately 160hrs, 48oz approximately 140hrs, 16oz candle burn time is approximately 100hrs, 9oz approximately 60hrs, 8oz candle is approximately 50hrs, and the 4oz tin is approximately 30hrs. Always allow your wax pool to reach the edge of the jar. To ensure a long life, burn your candle for at least one hour. It is not recommended you burn a candle longer then 4 hours and remember to trim the wick to 1/4" before each burn. NEVER burn any candle unattended. ENJOY!